I think you mean the ECM (Engine Control Module) ? Replaced it. Passlock system wouldn't let it start til I had the Dealer program it. Worked fine for a month, then back to intermittent start.
Turn the key on. Dash lights come on. Turn to Start = nothing (no crank)! Try 5 or 6 times and maybe it'll start. Runs fine after that...but it's a crapshoot if it'll start again. May go weeks before this happens again.
Replaced: battery, Engine Control Module (programmed by Dealer), Starter Relay.
In the middle of West Virginia mountains...maybe Banjo Mtn, I broke down. Hit OnStar and got a reply. Something like "Out of service area" or "No connection" or something like that. OnStar is a TOTAL WASTE !!!
2005 XL. Always had it and was curious what & why. Only on cold startup and goes away after you drive it. Mentioned it when I picked it up from Dealer for something else and they say "normal". Just wondered after all these years what it is.
I had it done...drove it in, said I'd pick it up the next morning! They had to drop the front diff (I wouldn't be prepared to do in the driveway). And the gasket is riveted in!!! Yes, replace the O-ring. They also cleaned the intake screen (was 80% sludged up). That was the cause of low oil...
Broke down once in the mountains of WV. Hit the OnStar and got "No Service in Your Area". Canceled it when I got home. BTW - absolutely true = I don't/never have owned a cell phone! Now I wonder if my Smart TV is watching ME ??? LOL
You typed the words right off my post on a similar thread. Exact same problem: SLUDGE! Cleaned out the pan & screen...didn't need the O-ring but did it at that point. Pressure back to normal.
2005 XL had low oil pressure (22 at idle, 35 highway). Dropped the pan (a pain as you need to lower the front diff) and used a spatula to clean out the SLUDGE. The screen was like 80% blocked too. O-ring was fine but replaced it anyway. IT'S FIXED NOW: 38 at idle, 42-50 highway. That was all it...
You all have convinced me. Keep what I got (already did BOTH banks of lifters). Really wanted a Callaway conversion (560hp) on a new Yukon XL...but too many problems listed here on 2021's. Saw an older Callaway in the parking lot: "Sir...will you please quit licking my car"! LOL LOL Man, was...
2005 XL. Once-in-a-while I'll be driving, everything acts normal, and I'll see the N (red light) is on !?!?! If I stop and restart, it's off. Happened twice now.
Why are they here and why would they stay??? You need to look deep into that question. We have enough fossil fuels to last further into the future then we can see. We even used to be energy independent.
If you were to take it out yourself...I'm curious just how you will be transporting something like a 4x8 sheet of plywood to the upholsterer. The estimate they gave me for them to do it all was $900.
I was just trying to pick either a Denali XL or Suburban GC because they've got the 6.2. You've all convinced me...just keep my old Yukon XL with the 5.3 and be happy it doesn't have all these new-car problems!
??? All I want is an AM radio, sunroof ($1,500 option) and the 6.2...nothing else...and no packages. Any extra crap is totally useless...wouldn't touch any of it. Wish there was a 6.2 option on an LS...even that has way more crap then I want.
In the ol' daze, a battery was alive or dead...but with all these new electronics, a zombie state, enough to start and act normal can still be low and really effect electronics. Of course, things like bad/corroded connections and weak ground can effect voltage too.
All I want is a 6.2, so stuck between a Denali XL with all it's gingerbread or a Suburban High Country which I'm leaning toward. I only listen to AM radio and do not even own a cell phone so I wouldn't even touch all the electronic do-dad's on the Denali. With the Suburban - no "packages" and...
New lifters both sides. Woke up for my 1st cold start - expecting to hear something from River Dance! LOL Quieter then new! Now (from my other thread), let's see how the coolant leakage goes. Those AC Delco tablets worked like a charm. Now that we're flushed the system and replaced the (possibly...
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